CVE-2026-9547
EUVD-2026-4149503.07.2026, 07:16
When a libcurl-based application performs transfers via `SCP://` or `SFTP://` and utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for that host in the `known_hosts` file. Instead of rejecting the mismatch, the callback mechanism fails to properly enforce the restriction, allowing the connection to succeed without warning and risking a potential man-in-the-middle attack.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| haxx | curl | 7.69.0 ≤ 𝑥 < 8.21.0 |
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| curl | curl | 𝑥 ≤ 8.20.0 | CNA |
| curl | curl | 𝑥 ≤ 8.19.0 | CNA |
| curl | curl | 𝑥 ≤ 8.18.0 | CNA |
| curl | curl | 𝑥 ≤ 8.17.0 | CNA |
| curl | curl | 𝑥 ≤ 8.16.0 | CNA |
| curl | curl | 𝑥 ≤ 8.15.0 | CNA |
| curl | curl | 𝑥 ≤ 8.14.1 | CNA |
| curl | curl | 𝑥 ≤ 8.14.0 | CNA |
| curl | curl | 𝑥 ≤ 8.13.0 | CNA |
| curl | curl | 𝑥 ≤ 8.12.1 | CNA |
| curl | curl | 𝑥 ≤ 8.12.0 | CNA |
| curl | curl | 𝑥 ≤ 8.11.1 | CNA |
| curl | curl | 𝑥 ≤ 8.11.0 | CNA |
| curl | curl | 𝑥 ≤ 8.10.1 | CNA |
| curl | curl | 𝑥 ≤ 8.10.0 | CNA |
| curl | curl | 𝑥 ≤ 8.9.1 | CNA |
| curl | curl | 𝑥 ≤ 8.9.0 | CNA |
| curl | curl | 𝑥 ≤ 8.8.0 | CNA |
| curl | curl | 𝑥 ≤ 8.7.1 | CNA |
| curl | curl | 𝑥 ≤ 8.7.0 | CNA |
| curl | curl | 𝑥 ≤ 8.6.0 | CNA |
| curl | curl | 𝑥 ≤ 8.5.0 | CNA |
| curl | curl | 𝑥 ≤ 8.4.0 | CNA |
| curl | curl | 𝑥 ≤ 8.3.0 | CNA |
| curl | curl | 𝑥 ≤ 8.2.1 | CNA |
| curl | curl | 𝑥 ≤ 8.2.0 | CNA |
| curl | curl | 𝑥 ≤ 8.1.2 | CNA |
| curl | curl | 𝑥 ≤ 8.1.1 | CNA |
| curl | curl | 𝑥 ≤ 8.1.0 | CNA |
| curl | curl | 𝑥 ≤ 8.0.1 | CNA |
| curl | curl | 𝑥 ≤ 8.0.0 | CNA |
| curl | curl | 𝑥 ≤ 7.88.1 | CNA |
| curl | curl | 𝑥 ≤ 7.88.0 | CNA |
| curl | curl | 𝑥 ≤ 7.87.0 | CNA |
| curl | curl | 𝑥 ≤ 7.86.0 | CNA |
| curl | curl | 𝑥 ≤ 7.85.0 | CNA |
| curl | curl | 𝑥 ≤ 7.84.0 | CNA |
| curl | curl | 𝑥 ≤ 7.83.1 | CNA |
| curl | curl | 𝑥 ≤ 7.83.0 | CNA |
| curl | curl | 𝑥 ≤ 7.82.0 | CNA |
| curl | curl | 𝑥 ≤ 7.81.0 | CNA |
| curl | curl | 𝑥 ≤ 7.80.0 | CNA |
| curl | curl | 𝑥 ≤ 7.79.1 | CNA |
| curl | curl | 𝑥 ≤ 7.79.0 | CNA |
| curl | curl | 𝑥 ≤ 7.78.0 | CNA |
| curl | curl | 𝑥 ≤ 7.77.0 | CNA |
| curl | curl | 𝑥 ≤ 7.76.1 | CNA |
| curl | curl | 𝑥 ≤ 7.76.0 | CNA |
| curl | curl | 𝑥 ≤ 7.75.0 | CNA |
| curl | curl | 𝑥 ≤ 7.74.0 | CNA |
| curl | curl | 𝑥 ≤ 7.73.0 | CNA |
| curl | curl | 𝑥 ≤ 7.72.0 | CNA |
| curl | curl | 𝑥 ≤ 7.71.1 | CNA |
| curl | curl | 𝑥 ≤ 7.71.0 | CNA |
| curl | curl | 𝑥 ≤ 7.70.0 | CNA |
| curl | curl | 𝑥 ≤ 7.69.1 | CNA |
| curl | curl | 𝑥 ≤ 7.69.0 | CNA |
Debian Releases
Ubuntu Releases
openSUSE / SLES Releases
openSUSE Product | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| curl |
| ||||||||||||||||
| libcurl-devel |
| ||||||||||||||||
| libcurl4 |
| ||||||||||||||||
| libcurl4-32bit |
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Vulnerability Media Exposure